At current time (11/21/2013) Bitcoin is USD 690. What is preferable? Buy bitcoin directly or buy a mining hardware and mine?
If buy mining hardware, any recommendation that is not very expensive?
Thanks
Buying Bitcoins directly is preferable.
Most mining hardware offers and mining contracts will give you less Bitcoins in return.
it's not expensive to buy now bitcoin?
If Bitcoins are successful they will be worth magnitudes more. The only unknown factor is the chance of this success.